<?php
/**
 * REKS framework is a very lightweight and small footprint PHP 5.3+ Framework.
 * It supports a limited set of features but fully MVC based and Objectoriented.
 * 
 * Copyright (c) 2012, REKS group ( Lars Martin Rørtveit, Andreas Elvatun, Petter Kjelkenes, Pål André Sundt )
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the REKS GROUP nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL "REKS Group" BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * @license 3-clause BSD
 * @package reks\form
 * @author REKS group at Telemark University College
 */
namespace reks\form;

class FormElement extends Element{
	/**
	 * 
	 * Enter description here ...
	 * @var reks\form\Form
	 */
	protected $form;
	
	protected $name;
	
	protected $rememberData = false;
	
	public function __construct(&$form, $name= null){
		$this->form = &$form;
		$this->name = $name;
		if ($name !== null){
			$this->attr('name', $name);
		}
	}
	
	/**
	 * Use to remember data.
	 * @return reks\form\FormElement
	 */
	public function rememberData(){
		$this->rememberData = true;
		return $this;
	}
	
	protected function realValue($name, $value){
		$ui = null;
		if ($this->form->input){
			$ui = $this->form->input->$name;
		}
		if (
			($this->form->rememberData || $this->rememberData) &&
			$ui
		){
			// htmlentities to remove possible XSS attacks.
			$val = $ui;
			return $val ? $val : null;
		}else{
			return $value;
		}
	}
}